Right, but none of that changes the fact that this case isn't about shipping. It just may be that whatever principle it relies on can be relied on just as easily to decide the retail shipping issue, but that doesn't get you the result you want on the retail shipping issue until someone else brings *another* case and gets a court to agree - which is exactly the same state the law has been in since Granholm. That's my point here - not to expect this to do anything Granholm didn't do so far as shipping is concerned.
If that seems strange, just look at Granholm. There you had a clear holding from the Supreme Court that:
"States have broad power to regulate liquor under §2 of the Twenty-first Amendment. This power, however, does not allow States to ban, or severely limit, the direct shipment of out-of-state wine while simultaneously authorizing direct shipment by in-state producers. If a State chooses to allow direct shipment of wine, it must do so on evenhanded terms."
Now you could argue that the rule that "if a State chooses to allow direct shipment of wine, it must do so on evenhanded terms" is broad enough that it applies to restrictions on retail sales just as clearly as it applies to restrictions on winery-direct sales. But some states obviously feel differently and their interstate retail shipping bans are still on the books. If you want to get them overturned, you have to sue and argue that the issue is controlled by Granholm.
Likewise, suppose the Supreme Court decides here something along the lines of:
"States have broad power to regulate liquor under §2 of the Twenty-first Amendment - but only so far as those regulations concern 'transportation or importation.' As the instant regulation concerns neither, it is not immune from scrutiny under the dormant commerce clause."
Great, that's a win! And it holds the dormant commerce clause applicable to the retail tier, not just the producer tier. So that means all those interstate shipping bans have to come down, too, right? well, no. It means you have to litigate it. Maybe those bans are still okay as regulations of transportation or importation, or maybe the issue is controlled by Granholm's holding that even restrictions on transportation and importation have to be on evenhanded terms.
Now, of course, there is no rule of law or particle physics that precludes the Court from going wild with a ruling along the lines of:
"States have broad power to regulate liquor under §2 of the Twenty-first Amendment - but only to the extent of banning or allowing its importation or transportation, not regulating retail sales."
but. that. ain't. gonna. happen.